A bunch of us over at DevArt have been playing around with Tegaki E, which is sort of an online drawing board/blog. I haven't done much with it because I'm still getting used to it. You're working with a limited palette and tool selection and you can't use your tablet pen's eraser (which is the most frustrating thing!). It's good idle doodling if nothing else.
However, in light of the approaching Gathering, I tossed a little Gathering art:
http://www.unowen.net/tegaki/dblog.php?u=18306&e=138579 I really must do this in Photoshop.